EP 1522728 A3 20060118 - Pressure control valve
Title (en)
Pressure control valve
Title (de)
Druckregelventil
Title (fr)
Soupape de régulation de pression
Publication
Application
Priority
JP 2003349036 A 20031008
Abstract (en)
[origin: EP1522728A2] A pressure control valve includes a shaft hole (16) formed through a wall surrounding a pressure detecting chamber (28) of a body (11), the shaft hole (16) being provided with a valve port (39) , a communication shaft (32) inserted through the shaft hole (16) and having an end protruding from the valve port (39) and provided with a valve element (33), a biasing unit (22) for biasing the valve element (33) so that the valve element (33) is pressed against an opening edge of the valve port (39) thereby to close the valve port (39), a branch hole (17) branched from a middle portion of the shaft hole (16) and communicating with the valve port (39), a sealing member (80) sealing a gap between the communication shaft (32) and an inner wall of the shaft hole (16) , a pressure sensing cylindrical member (42) having a closed end fixed to the communication shaft (32) in the pressure detecting chamber (28) and an open end directed opposite the valve element (33), a diaphragm (44) mounted on the open end of the pressure sensing cylindrical member (42), a terminal wall (24) formed on the body (11) so as to be opposed to the diaphragm (44) , and a stretching member (50) stretched between the diaphragm (44) and the terminal wall (24), the stretching member (50) being subj ected to a spring force the diaphragm (44) receives when the fluid pressure is in the pressure detecting chamber (28) is lower than the predetermined reference pressure, thereby moving the valve element (33) to the opening side.
IPC 8 full level
F04B 27/18 (2006.01); F16K 31/06 (2006.01); G05D 16/20 (2006.01)
CPC (source: EP KR US)
F04B 27/1804 (2013.01 - EP US); F16K 31/06 (2013.01 - KR); G05D 16/2024 (2018.12 - EP US); F04B 2027/1827 (2013.01 - EP US); F04B 2027/1854 (2013.01 - EP US); F04B 2027/1859 (2013.01 - EP US)
Citation (search report)
- [Y] US 2002141881 A1 20021003 - OKADA SATORU [JP], et al
- [A] US 5094589 A 19920310 - TERAUCHI KIYOSHI [JP], et al
- [A] EP 1048847 A2 20001102 - TGK CO LTD [JP]
- [A] EP 1033490 A2 20000906 - TOYODA AUTOMATIC LOOM WORKS [JP]
- [A] EP 1030092 A1 20000823 - SAGINOMIYA KK [JP], et al
- [DY] PATENT ABSTRACTS OF JAPAN vol. 2000, no. 23 10 February 2001 (2001-02-10)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1522728 A2 20050413; EP 1522728 A3 20060118; EP 1522728 B1 20070711; CN 1605780 A 20050413; DE 602004007451 D1 20070823; DE 602004007451 T2 20080313; KR 100564723 B1 20060327; KR 20050033825 A 20050413; US 2005077493 A1 20050414; US 6994313 B2 20060207
DOCDB simple family (application)
EP 04023615 A 20041004; CN 200410084979 A 20041008; DE 602004007451 T 20041004; KR 20040079375 A 20041006; US 95953804 A 20041006